Compilare: user.cpp: In function 'std::vector<int, std::allocator<int> > add(std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >)': user.cpp:29: warning: comparison between signed and unsigned integer expressions user.cpp:29: warning: comparison between signed and unsigned integer expressions user.cpp:31: warning: comparison between signed and unsigned integer expressions user.cpp:33: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'std::vector<int, std::allocator<int> > mult(std::vector<int, std::allocator<int> >, long long int)': user.cpp:45: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'int main()': user.cpp:96: warning: comparison between signed and unsigned integer expressions user.cpp:82: warning: unused variable 'j' user.cpp: In function 'std::vector<int, std::allocator<int> > fact(long long int)': user.cpp:67: warning: control reaches end of non-void function user.cpp: In function 'int bin(std::vector<long int, std::allocator<long int> >, long int, int, int)': user.cpp:23: warning: control reaches end of non-void function